Leases - Lease Liability Maturities (Details) $ in Millions	Dec. 28, 2019 USD ($)
Operating Leases
2020 (remaining nine months)	$ 1,051
2021	1,398
2022	1,218
2023	966
2024	845
Thereafter	3,579
Total undiscounted liabilities	9,057
Less: Imputed interest	(1,239)
Total lease liabilities	7,818
Finance Leases
2020 (remaining nine months)	23
2021	34
2022	35
2023	46
2024	25
Thereafter	921
Total undiscounted liabilities	1,084
Less: Imputed interest	(443)
Total lease liabilities	641
Total
2020 (remaining nine months)	1,074
2021	1,432
2022	1,253
2023	1,012
2024	870
Thereafter	4,500
Total undiscounted liabilities	10,141
Less: Imputed interest	(1,682)
Total lease liabilities	$ 8,459